公开(公告)号：US20240163466A1

公开(公告)日：2024-05-16

申请号：US18397147

申请日：2023-12-27

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  RESEARCH AND BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY

Inventor： Dong-San JUN ,  Jung-Won Kang ,  Hyunsuk Ko ,  Sung-Chang Lim ,  Jin-Ho Lee ,  Ha-Hyun Lee ,  Byeung-Woo Jeon ,  Hui-Yong Kim ,  Jee-Yoon Park

IPC: H04N19/44 ,  H04N19/119 ,  H04N19/122 ,  H04N19/186 ,  H04N19/593 ,  H04N19/60 ,  H04N19/82

CPC classification number: H04N19/44 ,  H04N19/119 ,  H04N19/122 ,  H04N19/186 ,  H04N19/593 ,  H04N19/60 ,  H04N19/82

Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. Coding decision information of a representative channel of a target block is shared as coding decision information of a target channel of the target block, and decoding of the target block is performed using the coding decision information of the target channel. Since the coding decision information of the representative channel is shared with an additional channel, repeated signaling of identical coding decision information may be prevented. By means of this prevention, the efficiency of encoding and decoding of the target block or the like may be improved.

公开(公告)号：US11503286B2

公开(公告)日：2022-11-15

申请号：US16461943

申请日：2017-11-28

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  INDUSTRY-ACADEMIA COOPERATION GROUP OF SEJONG UNIVERSITY

Inventor： Sung-Chang Lim ,  Jung-Won Kang ,  Hyunsuk Ko ,  Jin-Ho Lee ,  Ha-Hyun Lee ,  Dong-San Jun ,  Seung-Hyun Cho ,  Hui-Yong Kim ,  Yung-Lyul Lee ,  Jun-Woo Choi ,  Jin-Soo Choi ,  Nam-Uk Kim ,  Myung-Jun Kim

IPC: H04N19/00 ,  H04N19/117 ,  H04N19/132 ,  H04N19/44 ,  H04N19/80 ,  H04N19/70 ,  H04N19/513 ,  H04N19/19 ,  H04N19/122 ,  H04N19/176

Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus, and more particularly, a method and apparatus for performing filtering in video encoding and decoding. An encoding apparatus may perform filtering on a target, and may generate filtering information indicating whether filtering has been performed on the target. Further, the encoding apparatus may generate a bitstream including filtering information. A decoding apparatus may determine, based on filtering information, whether to perform filtering on a target, and may perform filtering on the target. The decoding apparatus may receive filtering information from the encoding apparatus through a bitstream or may derive filtering information using additional information.

公开(公告)号：US11412225B2

公开(公告)日：2022-08-09

申请号：US16585658

申请日：2019-09-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Joo-Young Lee ,  Seung-Hyun Cho ,  Seung-Kwon Beack ,  Hyunsuk Ko ,  Youn-Hee Kim ,  Jong-Ho Kim ,  Jin-Wuk Seok ,  Woong Lim ,  Se-Yoon Jeong ,  Hui-Yong Kim ,  Jin-Soo Choi

IPC: H04N19/13 ,  H04N19/184 ,  H04N19/196 ,  H04N19/149

Abstract: Disclosed herein is a context-adaptive entropy model for end-to-end optimized image compression. The entropy model exploits two types of contexts. The two types of contexts are a bit-consuming context and a bit-free context, respectively, and these contexts are classified depending on the corresponding context requires the allocation of additional bits. Based on these contexts, the entropy model may more accurately estimate the distribution of each latent representation using a more generalized form of entropy models, thus improving compression performance.

公开(公告)号：US20210329294A1

公开(公告)日：2021-10-21

申请号：US17359737

申请日：2021-06-28

Applicant: Electronics and Telecommunications Research Institute ,  INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY

Inventor： Jin-Ho Lee ,  Jung-Won Kang ,  Hyunsuk Ko ,  Sung-Chang Lim ,  Ha-Hyun Lee ,  Dong-San Jun ,  Hui-Yong Kim ,  Jae-Gon Kim ,  Do-Hyeon Park ,  Yong-Uk Yoon

IPC: H04N19/573 ,  H04N19/176

Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. In video encoding and decoding, inter-prediction information for a target block may be derived, and inter prediction for a target block may be performed using the derived inter-prediction information. Combined inter-prediction information may be performed by combining multiple pieces of inter-prediction information, and the combined inter-prediction information may be added as a candidate to a list used for inter prediction. One of candidates in the list may be selected for inter prediction for the target block, and inter prediction using the selected candidate may be performed.

公开(公告)号：US12244853B2

公开(公告)日：2025-03-04

申请号：US17529757

申请日：2021-11-18

Applicant: Electronics and Telecommunications Research Institute ,  HANBAT NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION

Inventor： Hyunsuk Ko ,  Jung-Won Kang ,  Sung-Chang Lim ,  Jin-Ho Lee ,  Ha-Hyun Lee ,  Dong-San Jun ,  Hae-Chul Choi ,  Hui-Yong Kim ,  A-Ram Back

IPC: H04N19/593 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/184

Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. Encoding and decoding of a target block are performed using intra-prediction. The intra-prediction is intra-prediction that uses bidirectional intra-prediction and a remaining mode. In bidirectional intra-prediction, a prediction value for a target pixel in the target block is determined based on reference pixels in two directions of bidirectional intra-prediction. In intra-prediction using a remaining mode, the remaining mode indicates remaining intra-prediction modes other than MPMs present in an MPM list.

公开(公告)号：US11943447B2

公开(公告)日：2024-03-26

申请号：US17864226

申请日：2022-07-13

Applicant: Electronics and Telecommunications Research Institute ,  INDUSTRY-ACADEMIA COOPERATION GROUP OF SEJONG UNIVERSITY ,  INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY

Inventor： Sung-Chang Lim ,  Jung-Won Kang ,  Hyunsuk Ko ,  Jin-Ho Lee ,  Ha-Hyun Lee ,  Dong-San Jun ,  Hui-Yong Kim ,  Yung-Lyul Lee ,  Nam-Uk Kim ,  Jae-Gon Kim

IPC: H04N19/105 ,  H04N19/119 ,  H04N19/137 ,  H04N19/159 ,  H04N19/176

CPC classification number: H04N19/137 ,  H04N19/105 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176

Abstract: Disclosed herein are a decoding method and apparatus and an encoding method and apparatus that perform inter-prediction using a motion vector predictor. For a candidate block in a col picture, a scaled motion vector is generated based on a motion vector of the candidate block. When the scaled motion vector indicates a target block, a motion vector predictor of the target block is generated based on the motion vector of the candidate block. The motion vector predictor is used to derive the motion vector of the target block in a specific inter-prediction mode such as a merge mode and an AMVP mode.

公开(公告)号：US11212553B2

公开(公告)日：2021-12-28

申请号：US16768035

申请日：2018-11-28

Applicant: Electronics and Telecommunications Research Institute ,  HANBAT NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION

Inventor： Hyunsuk Ko ,  Jung-Won Kang ,  Sung-Chang Lim ,  Jin-Ho Lee ,  Ha-Hyun Lee ,  Dong-San Jun ,  Hae-Chul Choi ,  Hui-Yong Kim ,  A-Ram Back

IPC: H04N7/18 ,  H04N19/593 ,  H04N19/176 ,  H04N19/184 ,  H04N19/159 ,  H04N19/182

Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. Encoding and decoding of a target block are performed using intra-prediction. The intra-prediction is intra-prediction that uses bidirectional intra-prediction and a remaining mode. In bidirectional intra-prediction, a prediction value for a target pixel in the target block is determined based on reference pixels in two directions of bidirectional intra-prediction. In intra-prediction using a remaining mode, the remaining mode indicates remaining intra-prediction modes other than MPMs present in an MPM list.